Drilling machine



Feb. 3, 1931. E. G. BGNDY DRILLING MACHINE Filed Oct. 2B, 1926 vNVENTOR.

ATTORNEY.

i and providedr with a base 11,.projecting out-- Patented Feb. 3, 193.1

UNITED STATES EDWARD e. 130mm,` or mvERRoUGE, moment 1` 1 DRILLINGixeuic'zmlxm Y Application med october 2s, 192e. serial N0.144',71Y9.

-My invention relates to a new and useful improvement in a 4 drillingmachineY adapted for drilling at an angle to the shank r handle of themachine, and is particularly adapted for use by electricians and thelike who are required to drill holesV in joists and other supportingmembers upon which a floor or other superstructure may be mounted.

vIt is an object of the present invention to provide a drilling machineof this class which will be simple in structure, economical ofmanufacture and highlyfeiicient in use.l

Another object of the invention is the provision of a drilling machineof`this class in which a certain amountof flexibility ofthe drill holderrelatively tothe rest ofthe machine may be afforded. 'l

Another object of the invention is the provision of a drilling machineof this class in Ywhich a drill holder, having within certain ,limits auniversal movement, may :be utilized.

Other objectswill appear hereinafter. The invention consists in thecombination and arrangement of parts I hereinafter described andclaimed. a The invention will be best understood by a reference to theaccompanying drawings which form a part of this specification, andwhich, t Fig. 1 is a side elevational view of thein'- Lvention showingit in operative position with a part broken away and part in section.

. Fig. 2 is a central vertical sectional view of the invention/infragment. t f Fig. 3 is a fragmentary sectional view taken onsubstantially line3-3 of Fig. 2.A

.Fig. 4 isa sectional view taken lon line 4--4ofFi.g.'2-;v

f As shown in the drawings, the vinvention `comprises a housing havinglside walls 9er:- tending intola laterally projecting neck 10 wardlyfromwhihfcentrally thereof, is-a "flange -12 surrounding an openingformed in the base;l Acover- 13 having a portion .14

Y inwardly offset and engaging within the hous-` n'gwalls isprovided,this inwardly .offset .portion 14 having a central openingformedV'therein and provided withan inwardly projecting fiange k15krsurrounding the opening. Y

Projected through the opening in the cover 13 so as to utilize ther`iange 15 as a bearing, and projected through the openingV formed in thebase 11`so asl to utilize the iang'e'f12,V l

as a bearing, is a shaft 16, threadedinto which is a screw' 17 projectedthrough 'the i washer 18. ,This shaft 16 is provided at. one end withthe peripheraly flange 19,1'andaformed in the same end of the shaft16-isa socket 20, projected into which isl a drillholder'V 21 Y rovidedat its inner endr with a spherical iiead 22, formed in which is a.diametrically extendingopening, the side walls 23 of which are arcuate,as shown inFig. 2. Projected through the shaft 16 and through theope'nmg formed in the-head 22 is a-locking vpin 2 4 which serves tomaintain vthe drillholder 21# von the shaft 16. Positionefitin'pocketsfvformed in the flange 19and 'projecting into' Athe socket 20 so as to`engageattheir inner ends theperiphery of the drillholder 121, are studs25, each of which is provided with'a head 26 engagingoneendof aspring-27,

ythefother end ofrwhich vengages the ring 28 which is positioned aroundflange'19,`the

spring 27 normally tendingto retain the studs in engagement with theperiphery ofthe drill holder 21, as shown in Fig. 2 ,andY

Fig.4. .j l t FiXedly mountedupon the shaft1'6inte'riorly yofthe'housi'ng is a sheave wheel'BO'which is provided on one face with arecess 31`in which rides a rockably mounted dog .32.` Diametricallyopposite the recess :31 is a vrecess 33 in which rides-the rockablyorswing-V Passing i" around vthe .sheave .wheel l30 4 is .a flexible;member, preferably, a cord`,`.belt,`

Vably mounteddog`34, these dogs being ad'apti Y j `ed' for .engaging theperipheral lnotches A. or recess 44 .formed ijn-the shaft16. rlfdesired, Vsuitablefsprings maybe `used .to retain the vdogs in, engagingposition rin' the pockets...

end 37j of the cord extends-downwardlyiand projects into a tubularyhan'dlefor-ming mem'- ber 38:.Which is suitably securedationetend to'the nec-lr 10.' v,The other end of the tubular member 38 extends intothe tubular extension 39, this tubular extension being slitted as at 40and provided With a locking Y cap which when threaded thereon will serveto clamp the slitted end of the extension 39 againstrthe tubular member3S so as to lock these members against relative ylongitudinal movement.'The -end 37 which projects into the member 38 is secured to one endofaspring 43, the other:l end of Whichds securedv to a diametricallyextending pin 42 mounted in the tubular inemberSS adjacent itsendfitshown in Fig. 1.

Rotatably mountedin the housingis aro'ller 4 5 vkfor engaging theVflexible cord, which passes' around. the ishaft 30,`as shown in Fig. 3;?shank46of a dril`lf4( isadapted for insertionintothefdrill holder 2l,radially projecting screws `48`and-`49 being used,l toseoure'tliedrillshank 46 against rotation in the drilljholder 211,'

soj as toiride the drill '47`.

e n isbeiieaea evident that. are) aan maybe used fordrilling:purposesatl an angle to the handle, 38. havingthe Yp i'nf24projected i through thec head 242,1 as shown olearly in vF ig.` 2,andbyhaving the b ore 20of a larger diameter lthe neck ofthe'drillholder, itisevident that a universal movement can 'be .given`to the '.jdrilliy holder? on the spherical head 22 Within certainlimits, these limits 'beingI determined' by. the aiiiounti'of ClearancebetWe-entheldrill holder :andi-'the bore 20, j' In thisway aiiexibilityvis given toa device ofthis. kind so that the operatorneednot always position thev housing in kalignment vwith the' opening tobe drilled', thusperinittingthe use of the device in clSequarterS,andfat varied angles, and'rendering the device moreadapt'able vthanvvherey the drill A'h'older'2lv is Ona fixed longitudinal axisrelatively to the'h`ousin, {'.V Vhen the, drill' has been rotated byrotating'tlievvheel 30 in "oneI 'direction,the spring 43-ivillfb`estretched Land` a ,release ofpressure on 'the handhold Sofa/illfpeimitlarotation of the /vvheelBO in .the 'opposite direction,lthed'gsmriding l,Overt'he notches, the, springv 43 eifee'ting 'the 'withdrawal ofjtheflexiblev member ivfhih passes over thefwhe'elrQ sufiieiently' tojplacethe deyioe inoperation for -further forward or operative movement. v

While rhaveiuusaaea andraesfenua aie Vpreferredform VofY"construction,Ido not Wish toflimit vmyself tothe :precise forni of structureshown,but desire to avail myself kof such variations and modilications as maycome Within the scope of the appended claims.

Having thus described my invention what I claim as new and desire tosecure by Letters Patent is:

' jdrilling machine comprising a long tubular'suppo'rt, a housingmountedV at one endof the support in fixed position With respectthereto, a transvrerse shaft journaled in Yafixe/d"plaein'said housingand having a socket-,atene end thereof exposed to the exterior of thehousing, said support being suiiis cientlylongisothatthe-.drill holderis adapted tohold a drill in operativepositionfor drilling whilesthelouei" end thereof-T rests-upon a. surface tov perniitA the arcuatefniovemenftj o fl the drill about saidloweren'df a'sga pivot, a: drillholder extending into thesocket and" having a uiiiversaliconnec'tfion'gtherewith, means for resi-lientl'y restraining-the -:drillholderl against the universal motion, a "slie'ave Wheel 'Within thehousing loosely inourftedon Vsa'idfshaft in a plane fixedyivith're'spect togthe support, a iiexilole` member' passing around saidsheave Wheelf with 'onefeiid' ythereof AVextending externallyof'thehousingto provideja handle oper able substantially f ,pa-rallell"to v the y support, means arranged iny the' tubular support' attachedto theoppos'ite'enhd-of th'eflexible member tending to retract-thes'ame, and'means mounted on said sheave'vvlieel for engaging the shaftand effecting its rotation in 'one direction and permitting'lthe freemotion -th'ereof'in the oppositedirectiomvherebythe operator may `restkthe lofv'vver'erid'ofjthe support upon alsur'faceand :effect a drillingoperation yby. movement ofthevvorking -`endabout 'the 'lovver endandfby: dravvingl the iiexible member over the sheavefvvhe'el'andgenerally 1x along the support; 'Without materially binding V`the'flexible' member against "the housing or the drillv inthe borehole.

` A2. A, drilling machine comprisingfa''long support, vahousingVmo'ui'itedat'4 one fendfofthe Ysupport in fixed? position With respectthereto, a[transverseshaftfjurnaled iny a i'ixed plane inisaidihou's'ing', a'drillfhol'der extend- Aing from the shaft!andconnected theretoby a universalj conneetion permitting a limited funiversal3 movement4 therebetween, saidI sup- 'portf beingsufficiently/l long so that the drill holder is adapted'to holdthe'drillf operativefp 'sition for.drilling-Whilethe'lorver end jthe'reoff'restsupon-'aff surface#to permit v Vthe areuatefmveme'nt 'of'the vdrill v'about said lo'iverr4 eiidi as a pivot? afsliea've WheelWithin lixedyvvith respect tofth'e support, a'fflexible member; passingaroundfsaid sheave 'Wheel with an', entr thereoflextending externallyfo'f ,thehousing-'to provide'a `handle capabl'elo'f movement in aplan'efparallelftothe support, 'whereby the "operator" may restthelovver end of the supportupon"'a vvsurface and effect-adrillngoperation by movement of the working end about the lower end andby drawing the exble member over the sheave wheel and generally alongthe support, without materally binding the flexible member against thehousing or the drill in the borehole.

In testimony whereof I have signed the fore 0in g g EDWARD G. BONDY. l Y

